Essays about: "quantitative genetics"

Showing result 21 - 25 of 28 essays containing the words quantitative genetics.

1. 21. Candidate genes and bioinformatic analysis of biological pathways for epistatic regulation of growth in chicken

   University essay from SLU/Dept. of Animal Breeding and Genetics

   Author : Muhammad Ahsan; [2010]
   Keywords : complex traits; QTL mapping; SNP; mutation; divergent selection; KEGG; UCSC; Ensembl; Galaxy; GO; conservation;

   Abstract : Selective breeding programmes for desired phenotypes in animals provide a good resource for researchers to understand the genetic basis underlying those phenotypes. Most traits of economic importance in animals are quantitative traits, which are controlled by genetic as well as environmental factors. READ MORE

3. 22. Genetisk bakgrund och avelsstrategier mot osteochondros hos hästar

   University essay from SLU/Dept. of Animal Breeding and Genetics

   Author : Sunniva Elwing; [2010]
   Keywords : osteochondros; selektionsstrategi; arvbarhet; quantitative trait loci; avel; oteochondrosis; breeding; selection strategies; quantitative trait loci; heritability;

   Abstract : Osteochondros (OC) och osteochondrosis dissekans (OCD) är en störning i den indirekta, endochondrala bentillväxten hos unga snabbt växande hästar. När prestationskraven på hästen ökar vid en högre ålder kan det leda till att den utvecklar hälta. Flera studier har visat att ostechondros har en genetisk komponent. READ MORE

4. 23. Investigation of genetic correlation among traits using massive SNP genotype in German Holstein population

   University essay from SLU/Dept. of Animal Breeding and Genetics

   Author : Esmaeil Amiri; [2010]
   Keywords : additive genetic variance; genetic correlation; dairy cattle; genotypes; milk yield; somatic cell count;

   Abstract : The aims of this study were to demonstrate the genomic architecture of quantitative traits using Illumina BovineSNP50 Beadchip as well as the identification of chromosomes or SNPs affecting multiple traits in German Holstein population. For this research, a total of 2333 German Holstein bulls were genotyped for 54,001 SNPs. READ MORE

5. 24. Possibilities to breed for internal parasite resistance in Swedish beef breeds

   University essay from SLU/Dept. of Animal Breeding and Genetics

   Author : Jenny Ahlqvist; [2008]
   Keywords : animal breeding; cattle; parasite resistance;

   Abstract : The aim of this review is to investigate the possibilities to breed for parasite resistance in the Swedish purebred beef population, with starting point in the organic production. The present population structure, breeding objectives and genetic evaluation will be discussed as well as four common internal parasites found among cattle in Sweden, registration of resistance by using faecal worm egg counts (FEC), the genetic background of FEC, and last the possibilities of using quantitative trait loci (QTL) and marker-assisted selection (MAS). READ MORE

6. 25. Arvets betydelse för mjölkkors beteende

   University essay from SLU/Dept. of Animal Breeding and Genetics

   Author : Caroline Bengtsson; [2008]
   Keywords : mjölkkor; beteende; gen; arvbarhet; korrelation; samband temperament; lynnet; rangordning; aggressivitet; foderintag; inlärning;

   Abstract : It becomes more important to consider different behaviour traits in the selection for dairy cows to be suitable in the production systems of today. The purpose of this investigation was to study the genetic background to behavioural traits and the heritabilities for temperament, rank order, aggressiveness, feeding behaviour and for learning behaviour. READ MORE